The most coveted address in town: the penthouse at 15 Central Park West. But it comes with a very hefty price tag. For 88 million U.S. dollars this will reportedly become the Manhattan home of Russian billionaire Dmitry Rybolovlev's daughter. Twenty-two-year-old Ekaterina, is studying at a U.S. 　　university and has decided this will be her nest when she's visiting New York. And it's the most anyone has ever paid for a slice of Big Apple real estate. [4]Across the street from 　　Central Park, the luxury apartment boasts a wraparound terrace and two wood burning fireplaces and is currently owned by former Citigroup Chairman, Sanford Weill. (Tara Cleary/Reuters)